Method of two-parameters control of spacecraft during descent in the mars atmosphere

An important task of a spacecraft control is to minimize the final speed of the device at the height of putting in operation the soft landing system. It should be noted that the complexity of decay in the Mars atmosphere is related to rarefaction. Therefore, limitations on overloads and temperatures should be taken into account when optimizing the trajectory of launching a spacecraft. These factors affect the appearance of the spacecraft and its mass. The paper presents the method of simultaneous control of a spacecraft using an attack angle and a roll angle using ricochet trajectories. With the help of this method, the problems of minimizing the final speed, reducing the maximum temperatures and overloads acting on the spacecraft during the movement in the aerodynamic braking area are solved. © 2017 Univelt Inc. All rights reserved.